Thin halfings are kenders... Personally I say kick the halfings and bring back the gnomes! Viva le revolucion!!!
I can't XP you again, but this is exactly my feelings.
The halflings are probably the most boring race in D&D. Tolkien hobbits were pretty much specifically designed to be the most bland, boring, vanilla race -- so anti-adventure that Uncle Owen was a daredevil, in comparison. You can Hin all you want, but you still don't really have anything that isn't borrowed from somewhere else or just fairly lame. They're like short humans... but shorter and that makes them sneaky, just like the cunning kobolds, the deceptive gnomes, and the violent goblins. You can spice them up by making them favor waterways or ride dinosaurs, but they're still pretty bland. Or, you can make them all crazy and call them kender.
If you don't want to go for goblins or kobolds as PCs (and I'm with you, there), then just use gnomes. They aren't exactly thrilling, but they have something resembling a personality. Short, hippy tricksters with a violent streak is a lot more interesting than watching short paint dry or a race of juvenile delinquents.
I will grant you, though, that kender are a lot more interesting than tinker gnomes. Whoever decided gnomes should be associated with tech, especially insane tech, should be scourged.